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sTREM-1 as promising prognostic biomarker for acute-on-chronic liver failure and mortality in patients with acute decompensation of cirrhosis

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World Journal of Gastroenterology 2024年第9期30卷 1177-1188页

作者： Song-Man Yu hai Li guo-Hong Deng Xian-Bo Wang Xin Zheng Jin-Jun Chen Zhong-Ji Meng Yu-Bao Zheng Yan-Hang Gao Zhi-Ping Qian Feng Liu Xiao-Bo Lu Yu Shi Jia Shang Ruo-Chan Chen Yan Huang Department of Infectious Diseases Xiangya HospitalCentral South UniversityChangsha 410000Hunan ProvinceChina Department of Gastroenterology Renji HospitalShanghai Jiao Tong University School of MedicineShanghai 200127China Department of Infectious Diseases Southwest HospitalThird Military Medical University(Army Medical University)Chongqing 400038China Center of Integrative Medicine Beijing Ditan HospitalCapital Medical UniversityBeijing 100020China Department of Infectious Diseases Institute of Infection and ImmunologyUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430020Hubei ProvinceChina Department of Infectious Diseases Nanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Department of Infectious Disease Taihe HospitalHubei University of MedicineShiyan 442009Hubei ProvinceChina Department of Infectious Diseases The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630Guangdong ProvinceChina Department of Hepatology The First Hospital of Jilin UniversityChangchun 130021Jilin ProvinceChina Department of Liver Intensive Care Unit Shanghai Public Health Clinical CentreFudan UniversityShanghai 200093China Tianjin Institute of Hepatology Nankai University Second People's HospitalTianjin 300192China Infectious Disease Center The First Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830054Xinjiang Uygur Autonomous RegionChina The State Key Laboratory for Diagnosis and Treatment of Infectious Diseases The First Affiliated Hospital of School of MedicineZhejiang UniversityHangzhou 310003Zhejiang ProvineChina Department of Infectious Diseases Henan Provincial People's HospitalZhengzhou 463599Henan ProvineChina Department of Infectious Diseases Hunan Key Laboratory of Viral HepatitisXiangya HospitalCentral South UniversityChangsha 110051Hunan ProvineChina

BACKGROUND Acute decompensation(AD)of cirrhosis is associated with high short-term mortality,mainly due to the development of acute-on-chronic liver failure(ACLF).Thus,there is a need for biomarkers for early and accurate identification of AD patients with high risk of development of ACLF and *** triggering receptor expressed on myeloid cells-1(sTREM-1)is released from activated innate immune cells and correlated with various inflammatory *** To explore the prognostic value of sTREM-1 in patients with AD of *** A multicenter prospective cohort of 442 patients with cirrhosis hospitalized for AD was divided into a study cohort(n=309)and validation cohort(n=133).Demographic and clinical data were collected,and serum sTREM-1 was measured at *** enrolled patients were followed-up for at least 1 *** In patients with AD and cirrhosis,serum sTREM-1 was an independent prognosis predictor for 1-year survival and correlated with liver,coagulation,cerebral and kidney failure.A new prognostic model of AD(P-AD)incorporating sTREM-1,blood urea nitrogen(BUN),total bilirubin(TBil),international normalized ratio(INR)and hepatic encephalopathy grades was established and performed better than the model for end-stage liver disease(MELD),MELD-sodium(MELD-Na),chronic liver failure-consortium(CLIF-C)ACLF and CLIF-C AD ***,sTREM-1 was increased in ACLF and predicted the development of ACLF during first 28-d *** ACLF risk score incorporating serum sTREM-1,BUN,INR,TBil and aspartate aminotransferase levels was established and significantly superior to MELD,MELD-Na,CLIF-C ACLF,CLIF-C AD and P-AD in predicting risk of ACLF *** Serum sTREM-1 is a promising prognostic biomarker for ACLF development and mortality in patients with AD of cirrhosis.

关键词： Soluble triggering receptor expressed on myeloid cell-1 Acute decompensation Cirrhosis Acute-on-chronic liver failure Prognostic biomarker

Dynamics of the spatiotemporal velocity of glaciers on the eastern slope of Mount Gongga,China,under climate change

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Advances in Climate Change Research 2024年第3期15卷 490-499页

作者： Yin FU Bo ZHANG Qiao LIU guo-Xiang LIU Rui ZHANG Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610299China Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengdu 611756China

The quantitative assessment of glacier flow velocity dynamics plays a pivotal role in understanding its response mechanisms concerning climate *** work provides a systematic quantitative assessment of the deceleration status of glaciers in this region by investigating the motion evolution of typical glaciers in Mount Gongga in recent years,thereby revealing the seasonal dynamics and inter-annual evolution over an extensive time *** used the optical flow-small baseline subset(OF-SBAS)method to compute the time-series velocities of the hai-luogou Glacier and the Mozigou Glacier using 178 archived Sentinel-1 satellite synthetic aperture radar(SAR)images from 2014 to *** findings revealed a prominent seasonal pattern in glacier motion,characterised by cyclic variations in velocity from cold to warm ***,we identified variations in velocities across distinct regions of the glacier surface,underscored by the lag in the peak time node of glacier flow with increasing *** pattern may have been determined by a combination of internal and external factors,including mass accumulation and ablation-driven subglacial drainage,as well as the glacier geomorphological ***,during 2015-2021,the glaciers on the eastern slope of Mount Gongga exhibited an overarching trend of ***,the ablation area of the hailuogou Glacier recorded the most substantial deceleration,exceeding 8%per *** study underscores the efficacy of the OF-SBAS method in extracting long-term glacier *** work also establishes a robust foundation for the analysis of spatiotemporal fluctuations in glacier movement within the context of climate warming.

关键词： Monsoonal temperate glaciers Synthetic aperture radar(SAR) Glacier movement hailuogou glacier Mozigou glacier Optical flow-small baseline subset(OF-SBAS)

Flexural behavior of textile reinforced mortar-autoclaved lightweight aerated concrete composite panels

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Frontiers of Structural and Civil Engineering 2024年第5期18卷 776-787页

作者： Liying guo Mingke DENG Wei ZHANG Tong LI yangxi ZHANG Mengyu CAO Xian HU Department of Civil Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Key Lab of Structural Engineering and Earthquake Resistance Ministry of Education(XAUAT)Xi’an 710055China Scene engineering design institute Xi’an 710016China Dahua Group Shang hai 200062China

To improve the deficiencies of prefabricated autoclaved lightweight aerated concrete(ALC)panel such as susceptibility to cracking and low load-bearing capacity,a textile-reinforced mortar-autoclaved lightweight aerated concrete(TRM-ALC)composite panel was developed in this *** group of reference ALC panels and five groups of TRM-ALC panels were fabricated and subjected to four-point flexural *** was applied on the tensile side of the ALC panels to create *** variable parameters were the plies of textile(one or two),type of textile(basalt or carbon),and whether the matrix(without textile)was applied on the compression side of *** results showed that a bonding only 8-mm-thick TRM layer on the surface of the ALC panel could increase the cracking load by 180%−520%.The flexural capacity of the TRM-ALC panel increased as the number of textile layers *** reinforcement of the matrix on the compressive side could further enhance the stiffness and ultimate loadbearing capacity of the TRM-ALC *** panels with basalt textile failed in flexural mode,with the rupture of fabric *** with carbon textile failed in shear mode due to the ultra-high tensile strength of *** addition,analytical models related to the different failure modes were presented to estimate the ultimate load-carrying capacity of the TRM-ALC panels.

关键词： prefabricated autoclaved lightweight aerated concrete panel textile-reinforced mortar cracking load flexural capacity stiffness

三江平原农田排水期流域水体CH_(4)排放特征及影响因素

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中国环境科学 2024年第6期44卷 3078-3090页

作者：刘凯明张海李霞王明国杨涛李军白莉刘小龙天津师范大学天津市水资源与水环境重点实验室天津300387 天津师范大学地理与环境科学学院天津300387 中国地质调查局水文地质环境地质调查中心河北保定071051

在施肥和土壤淋溶等多种因素的影响下,农业流域水体甲烷(CH_(4))的源汇关系尚不明确,目前对于农业流域水体CH_(4)排放的监测和研究仍然不足.本研究选取三江平原的浓江流域为研究对象,利用顶空平衡法和扩散模型法对该流域不同水体的CH_(4... 详细信息

在施肥和土壤淋溶等多种因素的影响下,农业流域水体甲烷(CH_(4))的源汇关系尚不明确,目前对于农业流域水体CH_(4)排放的监测和研究仍然不足.本研究选取三江平原的浓江流域为研究对象,利用顶空平衡法和扩散模型法对该流域不同水体的CH_(4)浓度和排放通量进行监测和估算.结果表明:浓江流域水体普遍为CH_(4)的排放源,鸭绿河、浓江河流、沟渠和稻田水体的CH_(4)排放通量范围分别为0.51~99.60、0.97~20.44、4.13~20.90和24.84~58.07mg/(m^(2)·d),且沟渠和稻田水体的CH_(4)排放通量较高,分别为浓江河流的2倍和7倍.在鸭绿河干流和沟渠水体中,CH_(4)浓度与pH值和溶解氧(DO)均呈显著负相关,浓江干流的CH_(4)浓度与DO呈显著正相关.浓江干流和沟渠水体的CH_(4)浓度与溶解性有机碳(DOC)呈显著正相关,表明排水期农业有机肥的使用会促进水体CH_(4)的产生.流经湿地浅水区和受农田施肥影响的河段水体具有较高的CH_(4)浓度和排放通量,表明CH_(4)排放受到了土地利用方式的显著影响.相比于全球其他农业河流,排水期浓江流域河水在排水期具有较高的CH_(4)浓度和较低的CH_(4)排放通量,较低风速缓解了水-气界面的排放.而沟渠水体排水期间较低的CH_(4)排放通量主要受富氧状态的影响.三江平原作为典型的东北黑土农业区,探究其农业流域CH_(4)的产生和排放对于未来区域的碳收支平衡和碳排放评估具有重要意义.

关键词：农业流域排水期温室气体CH_(4) 产生与排放

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数字新基建政策如何影响企业避税行为?

财经研究 2024年第3期50卷 64-77页

作者：王海郭冠宇尹俊雅浙江工商大学现代商贸研究中心浙江杭州310018 浙江工商大学经济学院浙江杭州310018 浙江工商大学泰隆金融学院浙江杭州310018

数字基础设施建设是中国政府促进数字经济发展、提升政府治理数字化水平的重要抓手,加快新型数字基础设施建设能否震慑企业避税行为有待明确。文章基于2011—2020年地方数字新基建政策文本数据,实证检验数字新基建政策对企业避税的影响... 详细信息

数字基础设施建设是中国政府促进数字经济发展、提升政府治理数字化水平的重要抓手,加快新型数字基础设施建设能否震慑企业避税行为有待明确。文章基于2011—2020年地方数字新基建政策文本数据,实证检验数字新基建政策对企业避税的影响。研究发现,实施数字新基建政策能抑制企业避税行为。基于宽带中国战略构造的双重差分模型检验结果验证了研究结论的稳健性。机制分析表明,数字新基建政策可以促进地区数字经济发展和缓解政企间信息不对称,并能助力政务数字化转型,抑制企业在应付账款方面的财务操纵行为,进而提高企业纳税遵从度。异质性分析结果显示,数字新基建政策的税收震慑效应在高税收征管力度地区、高媒体关注度和高数字化程度企业中更为明显。文章的结论为数字经济背景下的企业避税研究提供了新的视角,对于促进国家治理体系和治理能力的现代化建设也具有一定参考价值。

关键词：数字基础设施政策文本税收征管企业避税

光和热驱动金催化邻炔基酚与芳基重氮盐的反应:两种机制相似性和差异性的理论研究

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Chinese Journal of Chemical Physics 2024年第1期37卷 87-99,I0036-I0092,I0118页

作者：金蕊郭昕怡彭灵雅刘向洋方维海崔刚龙北京师范大学化学学院理论及计算光化学教育部重点实验室北京100875 四川师范大学化学与材料科学学院成都610068

实验上发现,邻炔基酚与芳基重氮盐在热催化和光催化条件下反应可生成不同的产物,然而反应机理尚不清晰.本文采用MSCASPT2和密度泛函理论方法研究了热和光驱动反应的催化机理.结果表明,热催化和光催化反应的初始历程相同,都是在HCO3-协... 详细信息

实验上发现,邻炔基酚与芳基重氮盐在热催化和光催化条件下反应可生成不同的产物,然而反应机理尚不清晰.本文采用MSCASPT2和密度泛函理论方法研究了热和光驱动反应的催化机理.结果表明,热催化和光催化反应的初始历程相同,都是在HCO3-协助下由Au(Ⅰ)催化剂和邻炔基酚反应得到乙烯基Au(Ⅰ)中间体.在此过程中,Au(l)催化剂与邻炔基酚反应克服14.8 kcal/mol的能垒生成结构扭曲的配合物,此时邻炔基酚的C≡C三键被活化.随后,乙烯基Au(Ⅰ)中间体和芳基重氮盐形成复合物,热催化和光催化反应开始分叉.在黑暗条件下,反应克服15.7 kcal/mol的能垒后生成最终的热催化产物,此时芳基重氮盐的末端N原子直接与乙烯基Au(Ⅰ)中间体的C原子成键.在光照条件下,复合物首先弛豫到激发单重态,经9.8×10^(9)s^(-1)的高效系间窜跃过程衰变到T_(1)态.在T_(1)态,克服7.8 kcal/mol的能垒完成脱氮反应,产生与乙烯基Au(Ⅰ)中间体的Au原子具有相互作用的芳基自由基,随后发生系间窜跃过程到达基态.在基态形成最终的光催化产物.本研究为理解Au(Ⅰ)催化剂与芳基重氮盐的热催化和光催化反应提供了重要的机理见解,发现了无辐射跃迁在光催化反应中的关键作用.

关键词：光氧化还原催化过渡金属配合物密度泛函理论反应机理 Au(Ⅰ)催化剂光物理芳基重氮盐邻炔基酚

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巴豆化学成分及其细胞毒活性研究

中国中药杂志 2016年第19期41卷 3620-3623页

作者：苏海国杨槐蒙春旺彭成郭力戴鸥成都中医药大学药学院中药材标准化教育部重点实验室中药资源系统研究与开发利用省部共建国家重点实验室培育基地四川成都611137

综合运用硅胶、MCI、Sephadex LH-20柱色谱和制备薄层色谱、半制备高效液相色谱等方法,对巴豆Croton tiglium化学成分进行分离纯化,并采用波谱学手段鉴定化合物结构。从巴豆中分离并鉴定了7个化合物,分别为：壬二酸二甘油酯（1）、12-O... 详细信息

综合运用硅胶、MCI、Sephadex LH-20柱色谱和制备薄层色谱、半制备高效液相色谱等方法,对巴豆Croton tiglium化学成分进行分离纯化,并采用波谱学手段鉴定化合物结构。从巴豆中分离并鉴定了7个化合物,分别为：壬二酸二甘油酯（1）、12-O-（α-甲基丁酰基）佛波醇-13-癸酸酯（2）、12-O-（α-甲基巴豆酰基）佛波醇-13-癸酸酯（3）、（9S,10R,11E,13R）-9,10,13-三羟基十八碳-11-烯酸（4）、（9S,10R,11E,13R）-9,10,13-三羟基十八碳-11-烯酸甲酯（5）、4（1H）-喹啉酮（6）、5-羟基-2-羟甲基吡啶（7）。其中化合物1为新化合物,化合物4~7均为首次从大戟科中分离得到,化合物2和3对人肺癌细胞A549和人肝癌细胞Hep G2有明显的细胞毒作用,抑制人肺癌细胞A549增值的IC50分别为47.8,7.0μmol·L^-1,抑制人肝癌细胞Hep G2增值的IC50分别为71.4,44.0μmol·L^-1。

关键词：巴豆化学成分结构鉴定细胞毒活性

Spectrum manipulation of a dual-stop-band metamaterial terahertz filter based on unit cell dimension changes

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Optoelectronics Letters 2019年第3期15卷 174-178页

作者：许巍郭海洋李修函徐冬冬魏国武梁文琼毕亚琪秦勇 School of Electronics and Information Engineering Beijing Jiaotong UniversityBeijing100044China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong UniversityBeijing100044China1

We numerically and experimentally proposed a dual-stop-band terahertz filter based on standard microelectronic fabrication method. The stop bands locate at 0.32 THz and 1.02 THz with 3 dB bandwidths of 0.26 THz and 0.55 THz, respectively. The resonance characteristics of the proposed device were discussed with the help of surface current maps and field density maps extracted from computer simulation software to better understand the working principle of the proposed device. On top of that, a total of seven devices with different dimensions were fabricated to fully discuss the dimension effects on the resonant frequency shift and bandwidth changes. This fabrication process is applicable for related integrated metamaterial devices and provides essential experiment evidences for effective ways of manipulating the transmission spectrum of the proposed filter.

关键词： Spectrum manipulation of a dual-stop-band metamaterial terahertz filter based on unit cell dimension changes THz

我国大学科技园与高校互动发展的耦合协调度实证研究

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黑龙江高教研究 2024年第8期42卷 154-160页

作者：任立业郭海轩天津市科学技术发展战略研究院天津300011

聚焦大学科技园发展与高校科技成果创新转化互动关系,构建二者耦合协调发展机制模型及评价指标体系,选取我国2014—2020年各省份(不包含港澳台和西藏)数据实证分析二者综合评价值,运用耦合协调度模型测度二者耦合度、协调度及时空演进... 详细信息

聚焦大学科技园发展与高校科技成果创新转化互动关系,构建二者耦合协调发展机制模型及评价指标体系,选取我国2014—2020年各省份(不包含港澳台和西藏)数据实证分析二者综合评价值,运用耦合协调度模型测度二者耦合度、协调度及时空演进状态。研究发现,我国高校科技成果创新转化综合评价值提升速度明显且整体高于大学科技园发展综合评价值;大学科技园发展与高校科技成果创新转化两系统呈现高强度耦合状态,耦合度不断提升;两系统协调度整体水平不高,在空间上呈现出东部地区优于中部、东北、西部地区,伴随时间演进,绝大多数省份协调度呈现上升趋势,在研究期内10个省份实现等级跃迁。建议:以高校科技成果创新转化质效带动大学科技园高质量发展;进一步深化提升大学科技园发展质效;促进不同区域之间高校、大学科技园协同发展。

关键词：大学科技园高校科技成果转化耦合度协调度